The reason a light bullet is listed as longer than the next weight up is-------a dumb typo. If they are heavier they are longer.
My moulds are in effect all custom, as I cut them all to customer specs, both diameter and length, and often make steped bullets if the guns throat dictates it. For example if the throat is very long and large, and chamber neck area oversize, I fit the base so the loaded round will fill the chamber, with this large diameters length calculated to make contact with the large throat, and the forward portion close as I can hold to groove diameter. So if you want a mould heavier than I list, I can probably make it. As a general rule, lighter isn't wise as I've pretty much taken each form to it's lightest practical length for accuracy. LBT exists to supply bullets for any gun, oddball or not, and I have no competition.
For single shot rifles or handguns, get the bullet without a crimp groove. If the throat is short and the case bottle necked, give me the length of neck and throat combined and I'll cut a bullet with that bearing length, if you want maximum weight that will fit the gun, or shorter if you specify a weight that is less than the gun is capable of handling. In most cases I can keep all the lube grooves covered by the case neck, except for very long throated guns when heavy bullets are wanted, normally with more powerful rifle cartridges, I often put more lube grooves outside the case just to keep lead off the barrel, but those inside the neck normally are all that need be filled with lube.
